Self-evacuating vacuum cleaner

Details Self-evacuating vacuum cleaner Self-evacuating vacuum cleaner

A - Human Necessities

47

L

A47L 7/00 (2006.01) A47L 5/22 (2006.01) F04D 29/26 (2006.01)

Patent

CA 2359653

A vacuum cleaner has an electric motor driving an air impeller (68) for creating low pressure and a pump (120) which draws liquid material through an inlet tube from the bottom of a tank (32) and expels it from the tank. A priming apparatus (350) is disposed between the air impeller (68) and the interior of the pump (120) to place the interior of the pump (120) in air flow communication with a low pressure area generated by the air impeller (68). With the interior of the pump (120) in air flow communication with the low pressure area generated by the air impeller (68), the pump (120) is able to draw liquid material received by the tank (32) up through the pump inlet to prime the pump (120).

L'invention concerne un aspirateur à évacuation automatique comprenant un moteur électrique commandant une turbine à air (68) permettant de générer une basse pression et une pompe (120) qui aspire un liquide à travers le tube d'entrée provenant de la partie inférieure du réservoir (32) et l'évacue hors du réservoir. Un appareil d'amorçage (350) vient entre la turbine à air (68) et l'intérieur de la pompe (120) de manière que l'intérieur de la pompe (120) soit en communication par débit d'air avec une zone de basse pression générée par la turbine à air (68). Grâce à cette communication par débit d'air, la pompe (120) est en mesure d'aspirer le liquide provenant du réservoir (32) vers le haut à travers l'entrée de pompe pour amorcer la pompe (120).

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